Nitroxides, also known as nitroxyl radicals, are long-lived or stable radicals with the general
structure R1R2N–O•. The spin distribution over the nitroxide N and O atoms contributes to …

Stable radicals and thermally robust high-spin di-and triradicals have emerged as important
organic materials due to their promising applications in diverse fields. New fundamental …

Distance determination with pulsed EPR has become an important technique for the
structural investigation of biomacromolecules, with double electron–electron resonance …

Open-shell organic molecules, including S= 1/2 radicals, may provide enhanced properties
for several emerging technologies; however, relatively few synthesized to date possess …

We begin by reviewing the early developments in the synthesis of high-spin organic
molecules and the simultaneous rationalization of the ground states of high spin. A number …

Trityl-nitroxides show substantial promise as polarizing agents in solid state dynamic
nuclear polarization. To optimize performance it is important to understand the impact of spin …

The boron–oxygen hole center (BOHC) that is formed by irradiation of boron oxides has
previously been characterized extensively by continuous wave and pulsed electron …

MTSL is the nitroxide spin label that is most commonly used in site-directed spin labeling.
However, due to rotation of its gem-dimethyl groups that average anisotropic interactions, T …

Trityl and nitroxide radicals are widely used as probes in chemical and biochemical systems.
Understanding of factors that impact the electron spin relaxation for these radicals is …

The chapter covers work published in the calendar year 2021. The synthesis and reactivity
of four-membered heteroatom-containing cycles are reviewed. New developments in the …